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3 years ago

What are the steps to solve d=1/e + 1/f for e ?

Mathematics

1 answer:

konstantin123 [22]3 years ago

8 0

Solve for e

d = 1/e + 1/f

Move 1/f to the left side of the = sign

d - 1/f = 1/e

Multiply each side by e

e(d - 1/f) = e(1/e)

e(d - 1/f) = 1

Divide out (d - 1/f)

e(d - 1/f) / (d - 1/f) = 1 / (d - 1/f)

e = 1 / (d - 1/f)

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the windows on a building are proportional to the size of the building. the height of each is 18in and the width is 11in if the

Elena-2011 [213]

You can set this up as 2 fractions equal to each other, like ratios.

18/11=108/x

Cross multiply and you get 18x=1,188

Now divide both sides by 18 and get x.

x=66.

If the height of the building is 108ft, the width is 66ft.

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2 years ago

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2. A pool company is trying out several new drains. Drain A empties a pool at a rate of 2 gal/min. Drain B empties a pool at a rate of 5 gal/min. One pool has 108 gal of water in it. Write an equation for each drain that shows the amount of time it takes to empty the pool. Then solve each equation showing your work.

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3 years ago

1. You mix the letters S, U, M, M, E, and R in a bag. Without looking, you select one letter. Find the probability of each event

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3 years ago

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The correct answer is
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3 years ago

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lakkis [162]

Answer:

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2 years ago

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